Limiting Chemical Composition, %

Ni - Remainder
Cr - 20.0 – 22.5
Mo - 12.5 – 14.5
Fe - 2.0 – 6.0
W - 2.5 – 3.5
Co - 2.5 max.
C - 0.015 max.
Mn - 0.50 max.
V - 0.35 max.
S - 0.02 max.
Si - 0.08 max.
P - 0.02 max.

Physical Constants and Thermal Properties

Density, Ib/in3 (g/cm3) •••••• 0.311 (8.61)
Melting Range, °F (°C) •••••• 2464 – 2529 (1351 – 1387)
Specific Heat, Btu/lb •°F (J/kg • °C) •••••• 0.091 (381)
Curie Temperature, °F (°C) •••••• <-320 (<-196)
Permeability at 200 oersted (15.9 kA/m) •••••• <1.001
Coefficient of Expansion, 10-6 in/in • °F (μm/m • °C)
70 – 200°F (21 – 93°C) •••••• 6.90 (12.42)
70 – 1000°F (21 – 538°C) •••••• 7.46 (13.43)
70 – 1800°F (21 – 982°C) •••••• 7.84 (14.11)
Thermal ConductivityA, Btu • in/ft2•h•°F •••••• 91
W/m• °C •••••• 13.2
Electrical ResistivityA, ohm • circ mil/ft (μΩ•cm) •••••• 730.7 (1.215)
Young's ModulusA, 106 psi (GPa) •••••• 30.3 (209)
Shear ModulusA, 106 psi (GPa) •••••• 11.0 (75.8)
Poission's RatioA •••••• 0.30
HardnessA, HRB •••••• 86

Aroom temperature, as annealed.

Specifications and Designation

USN N06022
ASTM B 366, B 564, B 574, B 575,
B 619, B 622, B 626,
B 751, B 775, B 829
ASME SB-366, SB-564, SB-574,
SB-575, SB-619, SB-622,
SB-626, SB-751, SB-775,
SB-829
ASME Code Cases 2226,
N-621
Werkstoff Nr. 2.4602
ISO 6207, 6208, 9723,
9724

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